Science
Vol.323, No.5914, 30 Jan 2009
British Journal of Midwifery
Vol.17, No.2, February 2009
(not available online)
Protozoological Abstracts
Vol.33, No.2, February 2009
(not available online)
The Journal of Infectious Diseases
Vol.199, No.3, 1 Febraury 2009
Nature
Vol.457, No.7230, 5 Feb 20099
Helminthological Abstracts
Vol.78, No.1, Jan 2009
(not available online)
Americal Journal of Epidemiology
Vol.169, No.2, 15 Jan 2009
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